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Are viral genes that are expressed immediately after the virus infects the host cell lytic or lysogenic?
Viral genes expressed immediately after infection are typically associated with the lytic cycle. In this cycle, the virus hijacks the host cell's machinery to replicate and produce new viral particles, leading to cell lysis and release of the virus. In contrast, the lysogenic cycle involves the integration of viral DNA into the host genome, where it can remain dormant before activating. Thus, immediate expression of viral genes indicates a lytic infection.
What else can I help you with?
What cycle of viral replication are the viral genes incorporated in the host chromosome without destroy the cell?
lysogenic
How do genes make a phenotype?
They are expressed.
Which genes are dominant and which are recessive?
Dominant genes are always expressed in preference to recessive genes in cased where both genes are present.
What genes are expressed even when present on only one chromosome?
dominant genes
An expressed gene is one that?
is transcribed into RNA. Promoters (I think that's what you meant, right?) don't function as genes; they stand as a signal for RNA polymerase to begin transcription of the actual gene, which begins about 25 base pairs downstream of the promoter region in eukaryotic DNA. Expressed genes DO code for proteins, but not all protein-coding genes are expressed. For example, the cells in your heart contain genes that code for proteins needed only in your liver. While those genes definitely code for proteins, they're not expressed. Expressed genes (and non-expressed genes, Ke$ha Looks like a man, for that matter) are made of DNA, not mRNA.
What molecules are genes expressed through?
aids
Are Genes present in heterochromatin readily expressed?
No. Heterochromatic regions of DNA are not readily expressed as they are densely packaged. Some of these regions do not code for genes at all.
What gene is always expressed?
Dominant genes will always be expressed however recessive genes would need to be inherited from both parents
What trait is is expressed when two diffrent genes for the same trait are present?
A dominant trait is expressed when two different genes for the same trait are present.
What is the differencs between dominant and recessive?
Dominant genes are genes that are expressed more readily than recessive genes, i.e. if you had a genotype that was AaBb, A being for brown hair, a for blonde hair, B for brown eyes, b for blue, you would have brown hair and brown eyes as the genes for those phenotypes are dominant. For recessive genes to be expressed in the phenotype the gamete needs to have recessive genes for both "slots", e.g. AA for blonde hair to be expressed or bb for blue eyes to be expressed. Edd
What bacterium is pathogenic only when its lysogenic?
The bacterium that is pathogenic only when lysogenic is Streptococcus pyogenes. It can become virulent by acquiring a lysogenic bacteriophage that carries genes for toxins, such as the pyrogenic exotoxins, which can lead to diseases like scarlet fever and streptococcal toxic shock syndrome. In its non-lysogenic state, S. pyogenes can still cause infections but lacks the enhanced virulence associated with the phage. Thus, lysogeny plays a crucial role in its pathogenic potential.
Which is true of transcription factors?
They control which genes are expressed.
